RE: [DMCForum] more sound-proofing questions
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RE: [DMCForum] more sound-proofing questions



> do not use the readily available spray
> glues that you can buy just anywhere as when the vehicle gets hot all
your
> work will be destroyed.

Greg,
Can you explain more what you are talking about?  Do you mean that the
glue
lets go and gets sticky when it gets hot?  I had this problem before with
an
aerosol spray adhesive when I put the dash together on an old Plymouth.
It
was just like trying to glue the panels together with corn syrup.  I
wouldn't put anything in the doors that could hold water.  You would never
realize how thoroughly wet the inside of a DeLorean door gets in the rain
until you drive around with the door panels off.  Each little drop at the
edges of the window frame will hit somewhere and splatter creating larger
drops that then drip again and ultimately soak the carpet.  I ended up
gluing a piece of shower curtain to the back side of the impact beam to
work
as an umbrella for the window motor.  Since my previous HD window motor
filled with water and rotted, I'm not taking any chances.  I have a whole
photo-essay ready to put together about that.


This generally applies to a lot of products available over the counter.
For
example, spray paint is not as good as automotive paint you buy at an
automotive paint supplier, which in turn is not as good as what is used on
the assembly line.  The EPA has a lot to do with this as well.

The spray glue you buy in a can on the consumer market is not as high of a
quality as what is used when a vehicle is manufactured.  The exception to
stick-ability being if you used the consumer grade glue to hold something
on
a piece that will be mounted in such a way so the glued covering is
vertical, or horizontal with the material on top, you wouldn't have a
problem.  If you use the consumer grade glue to cover your headliner I can
guarantee that it will be in your lap when it gets warm.  Everyone I knew
in
competition had this problem but most of these vehicles spent limited time
in regular use and being exposed to heat.  There was one brand of spray
glue
I used way back then, that was at the time only available through a
vendor,
by the brand name Accelle I think.  It was in a thin, blue spray can and
held better than most others, just make sure you clean the tip really well
when you are finished.

The glues used at upholstery shops I have seen require a compressor, spray
gun, and respirator although I have no idea what brand they use and when I
asked they told me quite brazenly that I couldn't obtain it.  My spray
guns
are for paint anyway.  I also experimented with a glue from an air
conditioning and refrigeration supplier that seemed to be ok but I didn't
use it enough to really know.  One thing we learned to do when you glue
material on, use a hot glue gun and secure the edges on the back side to
keep the material tight and in place.  If the hot glue warms up enough to
let go then you have other things to worry about, like how to put the fire
out.



Speaking of other makes, the new Lincoln
Navigator weighs 400 pounds more than its Ford Explorer sibling.  Most of
this extra weight is supposedly due to sound-proofing insulation.


Probably a typo, but the Lincoln Navigator is based on the Ford
Expedition.
The Mercury Mountaineer is based on the Ford Explorer.  The Cadillac
Escalade is based on the GM Yukon/Denali/Tahoe.  Hell, even the new Hummer
H2 is on this basic platform.   Not only are they full of sound deadening
material but a lot more electronics and "comfort" stuff that helps to
increase the price exponentially.  I could really get on the soap box
about
content and pricing with vehicles based on multiple platforms but I will
refrain.

Greg



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